Siphon.



S. J. GRAHAM & A. E. FOWLER.

SIPHON.

APPLICATION FILED PEB.21,1908.

Patented June 15,1909.

I N VE N TOHS .Iraizazn W/ TNE SSE S A TTOHNEYS I SIDNEY JOHNSON GRAHAM AND ALBERT ENOOH FOWLER, OF

PATENT OFFICE- TROUT LAKE, BRITISH COLUMBIA, CANADA.

SIPEON.

Specification of Letters Patent.

Patented June 15, 1909.

Application filed February 21, 1908. Serial No. 417,023.

To all whom it may concern:

lie it known that we, SIDNEY J. GRAHAM and ALBEIIT E. FowLnn, subjects of the King of Great Britain, and residents of Trout Lake, British. Columbia, Dominion of Canada, have invented a new and Improved b'iphon, clear, and exact description.

This invention is an. improvement in siphons, and has for its object to provide a siphon through which the flow of a'l-iquid from one level to a lower level may be automatically started and thereafter easily controlled. To this end we provide the long or discharge leg of the siphon with a valve.

such as to prevent the suction of air into the leg through its discharge end, but will permit of the passage of a fluid in'the opposite direction; and an air pump having a connection with the siphon for exhausting the air therefrom. Also in connection with the siphon is a vent opening having a manuallyoperated valve by which the flow of the liquid may be easily controlled.

Reference is to be had to the accompanying drawings forming a part of this speeifi cation, in which similarcharacters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the preferred embodiment of our improved siphon, showing the same partly in section and in position to discharge a liquid from one receptacle to a receptacle at a lower level; Fig. 2 is a.

cross-section on the line 22 of Fig. 1, looking in the direction of the arrow; and Fig. 3 is a fragmentary central sectional view of the siphon, showing the valve for controlling the vent. a

More specifically set forth, the invention includes the usual tubular siphon 5, connecting at the lower end of its discharge or longer leg with an singularly-arranged tube (3, which has a flap valve 7 of rubber or other suitable material covering the bore in the longer leg and secured in the tube 6 at its upper end by a plug or cork 8.

At a suitable point of the siphon, preferably intermediate the length of the longer log. is connected a compressible air bulb 9, the connection between the siphon and this of which the following is a full,

bulb being such as to support the bulb at or near the level of the bend between the two legs. Also in connection with the siphon is I a valve-controlled ven't opening 10, preferably located on that side of the bend adjoining the discharge leg. The valve 11 which "controls this vent is carried at one end of a manually-operated lever 12, the latter being fulcrumed at 13 to the siphon and provided with a spring 14 arranged to normally force the valve to its seat.

In the operation of the siphon its shortleg is placed in the receptacle from which the liquid is to be drawn, and with the opposite and longer leg located over the point or receptacle which is to receive the discharge. The bulb 9 is then pressed, which forces the air out 'of the discharge leg through the valve 7, and on releasing this bulb a vacuum is created in the siphon which causes the liquid to rise in the shorter leg. If this rise of the liquid in the shorter leg is insuflicient to carry it over the bend into the discharge leg, where it will pass through the valve 7 under the action of its weight, one or more repeated compressions of the bulb with the shorter leg at each compression closed with the finger or other device, will sutliciently exhaust the air for this purpose. The bulb, however, will be ordinarily large enough for the siphon to start the'fiow of the liquid when it is compressed and released a single time. During the passage of the liquid 'through the siphon, the flow of the same may be easily regulated or entirely out OK by operating the lever 12.

The invention as shown and described while being the preferred arrangement and construction of our improved siphon may nevertheless be modified within the scope of the claims annexed.

Having thus described our invention We claim as new and desire to secure by Letters Patent:

l. The combination of a siphon having an angularly-arranged tube at the discharge end of its longer leg, a flap. valve arranged in said tube directly under the end of said longer leg, and an air pump connected with thesiphon for exhausting the air therein.

angularly arranged tube at the discharge names to this specification in the presence of en of its longer 1 a flap valve arran ed the subscribm witnesses.

in said tube normal y. closing the leg, :1 p ug SIDNE JOHNSON GRAHAM. in one end of the tube, securing the alve in ALBERT ENOCH FOWLER. place, and a compressible bulb in connection lVitness'es with the longer leg of the siphon above the F. C. CAMPBELL,

valve. A. N. VARB,

In testimony whereof we have signed our J. O. PIPER. 

